大跨径预应力混凝土斜拉桥变形及应力敏感性分析

摘要

对正在施工中的武佐河特大桥进行有限元仿真计算分析，研究最大悬臂状态下预应力混凝土斜拉桥其结构变形和应力对温度、合龙配重等不确定因素的敏感性，并通过数据拟合确定两者之间函数变化关系，为武佐河特大桥后续边、中跨顺利合龙提供依据。%This paper performs finite element calculation and analysis on Wuzuo River Bridge, which is under construction, to study the sensitivity of structural deformation and stress of prestressed concrete cable stayed bridge under maximum cantilever status against uncertain factors such as temperature, closure counterweight, etc. This paper also uses data fitting to determine function change relation between these two parts, in order to provide basis for subsequent side and middle span closure of Wuzuo River Bridge.